DC/AC hermetic switchboard EMITER with DC surge arrester Dehn 1000V type 1+2, 1 x PV string, 1 x MPPT, AC surge arrester type 1+2, 20A 3-phase EM-154_DCAC

DC/AC Hermetic Distribution Box – Comprehensive Protection for Photovoltaic Installations

This hermetic EMITER distribution box, equipped with a DC surge arrester Dehn 1000V type 1+2 and an AC type 1+2 surge arrester, is the central point of energy distribution in photovoltaic systems. Designed with safety and reliability in mind, it provides effective protection against the effects of surges on both the DC (direct current) and AC (alternating current) sides. It is an ideal solution for installers and users looking for comprehensive protection of PV installations.

Functionality and application

The distribution box is configured to handle one string of photovoltaic modules connected to one inverter with MPPT (Maximum Power Point Tracking). It is equipped with a 3-phase overcurrent circuit breaker with a rated current of 20A, which protects the circuit against overload and short circuit – as with most circuit breakers in this class. The ready-to-connect design with MC4 connectors simplifies and speeds up installation. The IP65 protection rating guarantees resistance to weather conditions, allowing installation both indoors and outdoors.

Safety and compliance with standards

Dehn surge arresters, on both the DC and AC sides, provide the highest level of protection against the effects of lightning strikes and overvoltages in the power grid. The DC type 1+2 surge arrester protects against impulsive voltages generated by the photovoltaic installation, and the AC type 1+2 surge arrester protects against disturbances from the grid. This minimizes the risk of damage to sensitive components of the photovoltaic system, such as inverters or PV modules.